November 28, 2017
Thanks to our Program member from: Sarnia, ON
Vehicle: 2011 GMC Savana 2500 4.8 L
Condition: Truck won’t start, many U codes found and cannot communicate with ABS module
Agent recommendation: Check pin 6 and 14 at DLC connector for 60 ohms resistance and if not OK disconnect ABS module and retest
Solution: Technician found damaged ground at right rear of engine. Repaired and all communication restored and truck started.

November 21, 2017
Thanks to our Program member from: Balmoral, NB
Vehicle: 2012 Honda Civic 1.8 L
Condition: Vehicle will intermittently feel like stalling but immediately run again-No DTC
Agent recommendation: Check MAF sensor may be faulty and air intake tube for leaks.
Solution: Cracked air intake tube was replaced.

November 14, 2017

Thanks to our Program member from: Guelph, ON

Vehicle: 2009 GMC Acadia

Condition: Vehicle was towed in and stalled on road and no cranks no start condition, has codes U0073, P0700, and P069E

Agent recommendation: check the DLC pin 6 and 14 for total resistance of GMLAN high speed of 60 ohms, and go from there and see if FPCM or TCM is not shorting out the GMLAN

Solution: truck has been sent to dealer because issue was FPCM being bad and would need reprogramming.

November 7, 2017
Thanks to our Program member from: Perth, ON
Vehicle: 2005 Ford F550 6.0L Diesel
Condition: No start when hot, starts OK cold and runs all day, but if stopped when hot it won't restart, ICP pressure when hot is only 380psi and takes 500psi to start.
Agent recommendation: check the oil filter anti drain back valve in the oil filter base and replace it as needed since this is causing a drain back of the oil in filter and not having oil when trying to restart and since the oil pressure gauge in the dash doesn't move up when attempting to start it when hot it may be the issue.
Solution: 2 injectors were leaking oil pressure at top O-rings and replaced.

October 31, 2017
Thanks to our Program member from: Mitchell, ON
Vehicle: 2014 Chrysler Town and Country
Condition: Vehicle died while customer was driving. Vehicle has 12 volts but no crank no start. Technician had it towed to shop and did a hard reset on vehicle and now it starts.
Agent recommendation: Recommend replacing wireless ignition node (WIN/WCM).
Solution: Replaced (WIN/WCM)

October 17, 2017
Thanks to our Program member from: Brampton, ON
Vehicle: 2010 Landrover LR2
Condition: Vehicle was in an accident and now will not start. DTC B10A2 in the BCM also.
Agent recommendation: Found a TSB which requires BCM to be reprogrammed in the event of an accident.
Solution: Reprogram BCM.

October 12, 2017
Thanks to our Program member from: Brownsburg-Chatham, QC
Vehicle: 2006 Chevy Colorado
Condition: Vehicle will not start or run good intermittently. Fuel pressure is good. Vehicle will run when hooked up to injector cleaner.
Agent recommendation: Check for fuel contamination.
Solution: Fuel contamination was reported.

September 21, 2017
Thanks to our Program member from: Stratford, PEI
Vehicle: 2005 Ford F150
Condition: Vehicle had an engine misfire and technician replaced coil. Now vehicle has a lack of power on acceleration.
Agent recommendation: Check for exhaust restrictions and spark plugs.
Solution: Catalytic converters were plugged.

1.Install a Digital Volt ohm Meter (DVOM) that has a MIN/MAX mode to record the highest and lowest reading on the power wire going to injectors 2, 4 and 6.

2.Check the power wire from the injectors to the under hood fuse block for opens, high resistance or poor connections. Injectors 2, 4 and 6 are powered up by one fuse, and injectors 1, 3 and 5 are powered up by a different fuse. All the injectors have their own control wire from the injectors to the Powertrain Control Module (PCM).

Solution: Found loose connector on under hood fuse block.

TAC Information

We’re listening! ACDelco’s TAC team listens because they know how frustrating it can be to get good sound advice when it comes to vehicle diagnostics.

It pays to get it done right, and fast - the first time!
That’s the objective for all of our ACDelco Technical Assistance Centre licensed technicians. To get your problem diagnosis dealt with quickly and correctly…and of course, to just be there to listen.

The ACDelco TAC line is fully staffed with multi-lingual technicians Monday – Friday from 8am-6pm EST, ensuring they are available to take your call (or fax, or email). In English or French, our qualified TAC agents will be ready to answer your questions.

The TAC line uses the most advanced technology and current repair databases, in addition to detailed case information and data mining. Our agents have full access to common failure causes and repair procedures databases. Access to these cases can help solve the most complex requests.

Our TAC Specialists
ACDelco’s TAC line has master technicians supporting Domestic, European and Asian import vehicles. Agents have an impressive 45 years combined hands on experience. The breadth of experience includes:

Working directly with vehicle manufacturers and aftermarket suppliers

Class training delivery

Field experience

Auto body and collision repair

Heavy-duty and military powertrain experience.

Daniel Bernard has 25 years of automotive technical experience both in the OE and aftermarket environments, as well as heavy duty trucks. His background includes technician, warranty administration, technical training, dealer tool development and validation, technical assistance center support. Daniel provides technical training and support services in French and English.

Daniel (Dan) Mariani has 21 years of automotive technical experience with experience in both the OE and aftermarket environments. He is Honda certified and holds certificates in Automotive Service, Mechanical – Tool & Die Maker, and Architectural Technology.

Systems Support
ACDelco’s TAC agents have a lengthy list of technical resources and databases to support your complex questions. This includes factory OE information, as well as internal technical experts, field engineers, product specialists, and technical writers for several OEM's.

Resource databases include all major all makes manufacturers. Additional repair databases include Alldata, IATN, Mitchell1, Automotive Service Profession, eSI and more.